Malicious PDF — malware analysis report

Static analysis result for SHA-256 156bf9eb70bee3fb…

MALICIOUS

PDF

86.1 KB Created: 2021-03-06 02:59:42 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-17
MD5: 33a3a585ce7c43832a012945c0759509 SHA-1: 220be4d7345791b988b92eef205b70c62b63f77d SHA-256: 156bf9eb70bee3fb29812cb49f48d01f771de9f275c6daf71a4b0519d14c6bac
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://golowaki.ru/strik?utm_term=behringer+xenyx+x2222usb+specs PDF link annotation
    • http://kaboliwup.mypressonline.com/sat_review_courses_near_me.pdfIn PDF document text
    • http://dkmz1.club/53785521093yybxy.pdfIn PDF document text
    • https://pakunifa.weebly.com/uploads/1/3/5/3/135307874/1482222.pdfIn PDF document text
    • http://bettyloustintruckbbq.com/reznor_45000_btu_garage_heater_pricefr8io.pdfIn PDF document text
    • http://forexgeeks.net/islamic_calendar_2018_ukwj663.pdfIn PDF document text
    • http://lofitner.buzz/track_caller_appnaejy.pdfIn PDF document text
    • http://idealica-itufficiale.website/babarexebebopetu2xrn4.pdfIn PDF document text
    • http://nulivanofika.mygamesonline.org/73586124851.pdfIn PDF document text
    • https://bigakajufejala.weebly.com/uploads/1/3/4/2/134265656/bb9c3.pdfIn PDF document text
    • http://aycotoro0.xyz/dance_music_80skxyme.pdfIn PDF document text
    • http://dk-inc.xyz/interactive_dynamic_earth_test_answersh0kx2.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/bawalidamovidud/tukovokeleweferi.pdfIn PDF document text
    • http://bebojivim.myartsonline.com/babawejoronagaxoto.pdfIn PDF document text
    • https://13ea8442-998f-4f14-ba3b-7f37e53a414c.filesusr.com/ugd/008a9f_09ea73e8f743486c90cd608244f4ddd1.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/wazagidonux/churchward_legible_bold_font_free.pdfIn PDF document text
    • https://ec08fec6-e576-400d-8504-372613838d3c.filesusr.com/ugd/57e0ce_4d0471fcfec24b4691c49533cbfe9578.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/kagedatabujo/90465485375.pdfIn PDF document text
    • https://s3.amazonaws.com/gekojulog/refaxiri.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001130f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1130F 5444 bytes
SHA-256: c5d045909911a63784cf7067e81ad9d8433ac0cba025229cec8e63c33bcdb54a
font_01_sfnt_off000125a9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x125A9 11112 bytes
SHA-256: 8626aa9e8ce58a2a5161bc8dfcf327684aeab19cb31f2db2af9fc0a146095ac2